Selector



April 23, R. E. VAUGHAN AL SELECTOR Filed March 18, 1924 Patented Apr. 23, 1929.

UNITED STATES 1,710,126 PATENT OFFICE.

RAYMOND E. VAUGHAN, OF PIQUA, AND MARK H. REDMAN AND WARREN" S. D.

LELAND, OF DAYTON, OHIO.

SELECTOR.

Application filed March 18, 1924. Serial No. 700,176.

This invention relates to a selector or a selective receiver for closing any one of a number of circuits connected thereto as desired by the closingof a key or relay connected to the apparatus a given number of A further object of this invention is the provision of a selector which may be operable so that one may close the key or relay controlling the apparatus a definite number of times corresponding to the dots of'a telegraph system to select the proper apparatus to be energized, andlthen, by holding the key closed for a longer time corresponding to a 0 dash in the telegraph system, the circuit may then be made so as to operate the selected apparatus connected to the selector.

A further object is the provision of a selector having a plurality of solenoids or electrical relays, one of which steps up the contact arm to advance it to the proper contact dependent upon the number of dot impulses received by the selector and a second relay of the retarded type which may operate when the key is kept closed for a dash impulse so as to close a connection between the source of power and the selective contact only afternoid or relay and which will have the char-.

acteristic of a delayed return after it has been de-energized so that it will prevent a return of the contact arm while the quick shown in Fig. 2 as having a rotatin armaacting relay is being operated a number of times.

Further objects will be more fully set forth in the attached description and iii the drawings, in which:

Fig. 1 is a plan view of the selector and Fig. 2 is a diagrammatic illustration of the electrical connections of the selector as connected to external circuits.

Numerals 1 to 9 indicate contacts which are electrically connected to binding posts 10 to 17 inclusive. A contact arm 17 is mounted so as to rotate about a central pivot 18 and make contact with the various con- .ergiz'ing winding 29 and a short circuit windtacts. Arm 17 is mechanically connected to a hub nie1nber'19 which is provided with a plurality of teeth 20 which are adapted to be engaged by a pawl 21- suitably mounted by means of a, spring 22 upon the rod 23 so that the spring 22 will normally maintain the pawl in engagement with the teeth when the plunger is being moved to the left from its position shown in Fig. 1.

.A suitable stop screw 24. is provided to release the pawl 21 from the teeth 20 when the rod 23 is at its extreme right-hand position. Rod 23 is connected to an armature or solenoid 24 of a quick acting relay A. The spring 25, adjustable by means of nuts 26, operates to normally maintain the plunger in the position shown in Fig. Land 'to return the plunger to this position after the deenergization of the solenoid A. The hub member 19 of the contact arm is urged to its normal position as shown in Fig. 1 by means of a spring 27 connected tea fixed member 28 on the main base of the armature.

-A second relay B is provided with an en ing 80, the short circ'uited winding, together with an extra heavy plunger or armature 31, causing this relay to have a delayed'return after it has been de-energized.

The plunger 31 however is instantaneously operated so as to move downwardly from the position shown in Fig. 1, when the solenoid B is energized. Plunger 31 is connected by means of a spring 32 to an arm 33540 as to urge the detent 84 into engagement with teeth in the hub member 19 0f the contact arm. Such action permits counter-clockwise movement of the contact arm by the solenoid A, but prevents a clockwise movement of the contact, arm. v

A th rd solenoid C diagrammatically ture 35 of general Z-shape, is providied with an energizing. coil 36. When this coil 36 is energized, the armature will be slowly rotated in the direction of the-arrow shown in Fig. 2 due to the fact that the arcuate edges of the armature are not concentric with-the center of rotation as clearly shown in this figure, and also due to the fact that a portion of the wirings are short circuited. After the coil 36 is energized for a suflicient time, the armature will have rotated through approximately eighty or ninety degrees and close a contact 37 so as to connect a battery or 110 other suitable sourcc of power 38 in series with the contact armand the contact upon which it rests. The armature 35 is maintained in its normal position as shown in Figs. 1 and 2, and also returned to this position by means of a spring 39 connected to a trical parts indicated by 44, 45, and 46 which.

may be used for the remote control of steering devices or any other desired function. Circuit closer 47 which may be a key, relay,

or automatic transmitter, isfconnected as shown so as to energized the solenoids and windings simultaneously, these windings bemg connected in parallel or in series to the source of power 38, when the circuit closer 47 is closed.

The operation of the selector is as follows :-As'suming for example, that it is desired to operate the motor 44 which is connected to contact No.7. vT he operator presses the key or contact closer 47 so as to produce a series of impulses or dots. In this case, there are seven in number which will cause the operation of the armature ofsolenoid A seven times, thereby rotating the contact arm 17 seven steps, so that the contact arm will then rest upon contact No. 7 During the time interval between each dot impulse the contact arm 17 willbe prevented from resuming its original position on the insulated contact 1 by means of the relay B, since the armature of relay B will be withdrawn on the first dot impulse to cause detent 34 to engage with the teeth on the contact arm hub, and the characteristics of the solenoid B are such that the armature will not again resume its original position until'atter the time interval which is greater than the time between the dot im pulses. It is not desired to have the various electrical devices connected to contacts 2, 3,

4, 5 and 6 energized while the contact arm is moving over these contacts. For that reason, the solenoid C is so designed that it will be only partially rotated by the energization of its coil 36 corresponding to a dot impulse and the contact 37 will therefore not be closed until the contact arm has reached its desired position on contact No. 7. The last impulse,

in this case the seventh, will beheld by maintaining the key 47 closed and such operation will allow then for the full operation of the armature 35 of solenoid C so as to close the contact and connect the source of power to the external apparatus 44. The key is maintained closed for a time dependent upon how long it is desired to operate the motor or apparatus 44. The key is then released which immediately de-energizes all three solenoids. The spring 39 immediately operatesto return the armature 35 of solenoid C so as to break the contact and.thereby open the circuit connected to the motor 'or apparatus 44. After a very short time interval, the armature of solenoid B assumes its normal position withdrawing the detent 34 and permitting the return of the contact arm to its normal position ready for a second operation.

An elect ical apparatus of .the class described comprising a single contact arm, a solenoid having an armature, a ratchet and pawl connection between the armature and the contact arm, solenoid means to prevent the return of said contact arm until after a predetermined time interval after the deenergization of said first solenoid, a retarded solenoid to close the circuit through said contact arm after said retarded solenoid has been energized for a predetermined time, said retarded solenoid including a pivotally mounted armature having a contact extension thereon, said solenoids being connected for simultaneous energizat-ion, and a plurality of contacts adapted to be contacted by said contact arm.

In testimony whereof we aflix our signatures.

RAYMOND E. VAUGHAN. MARK-H; REDMAN. \VARREN' S. D. LELAND. 

